Premium
Effect of shear rheology on PVDC and PE blend permeation behavior
Author(s) -
Kirkpatrick D. E.,
Mclemore J. K.,
Wright M. A.
Publication year - 1992
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1992.070460301
Subject(s) - rheology , permeation , materials science , polymer blend , shear rate , polyethylene , polymer , shear (geology) , composite material , copolymer , chemical engineering , membrane , chemistry , biochemistry , engineering
The morphology of an immiscible polymer blend is dependent on the flow properties of the components and the deformation fields to which the mixture is exposed. The barrier properties of an immiscible blend is dependent on the barrier properties of the components and the morphological structure of the blend. Therefore, the resulting permeation rate of these blends is dependent on the rheology of the component materials. Conversely, the morphology of these blends can be studied by measuring permeation rates of a probe molecule. The oxygen permeation rate of vinylidenechloride copolymers blended with polyethylene changes abruptly over a small composition range. In the absence of significant extensional flow fields, this change is due to a phase inversion, and its position in the composition range is dependent on the shear rheology of the components.